Improvement in steam-boiler feeders



UNITED STATES PATENT OFFICE.

O. H. PRENTISS, OF DETROIT, MICHIGAN, ASSIGNOR TO HIMSELF AND A. VAN NORMAN, OF SAME PLAGE.

IMPROVEMENT IN STE-'AlVl-BO'ILER FEEDERS.

Specification forming part of Letters Patent No. 51,392, dated December 5, 1865.

To all whomtt 'may concern:

Beitknown that I, C. H. PRENTIss, of Detroit, in the county of Wayne and State of' Michigan, have invented certain new and useful Improvements in Steam-Boiler Feeders; and I do hereby declare that the following is a full and complete description of the construction and operation ot' the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a top view of the feeder. Fig. 2 is aside view. Fig. 3 is a sectional end View in the direction ofthe line,xx,in Fig. l. Fig.

4 is a sectional view in the direction of the line x' fr', in Fig. 1. Fig. 5 is a sectional view in the direction of th'e'line, y y, in Fig. l. Fig. 6 is a sectional viewaeross the valves and chest.

' Like letters of reference refer to like parts in the different views.

My improvement relates to the construction and operation of a steam-boiler feeder, as hereinafter described.

A,Fig. 3,l is the steam-pipe comm unie-ating with the boiler that enters a pipe, b.

G is a condenser in the inside of which a pipe, A', extends up till near the top, as shown in Fig. 4. The lower end of this pipe branches out on each side into curved pipes g g', that enter a chest, d. The pipe b that the steampipe A enters, is underneath the curved pipes and communicates with the Chest d. This chest is divided into chambers or divisions r fr' q q' z. Seen in Figs. 4 and 6. The sides of the chest form valve-seats, in which there are ports or openings m a O I S, directly opposite each other.

In the valves It, each side of the chest, are ports a c d e. The ports a c communicate with each other, and likewise d e, as shown in Fig. 6, through the passages ff'. These valves are constructed exactly alike, and are of the form shown in Figs. l. and 6, through the ends d", of which extend rods e', connecting them together on each side of the chest, where they are supported and move on slides or guides and act as balance-valves. They are operated by means of a pendulum, J, hung at c' to one side ofthe condenser that is connected to the valves at the lower end, being attached to the rod e' at one end of the valves.

H is a walking-beam that has its bearings or journals at j on the sides of the condenser, to the ends of which are h'ung'connecting-rods 7c, that-extend down and are attached at their lower ends to chambers E and L. To the upper part of these `chambers are connected pipes D and K, that turn down and'enter horizontal pipes C and J', and underneath the chambers E' and X are' pipes that communicate with the chambers and pi pesO/and X', (shown in Figs. land 2.)

At the junction of where the side pipes, D K and E' X, enter the pipes C C' J' X' there vis a division connecting` E' with O' and D with C, likewise X with X and K with J', cutting off direct communication between the ends C C and J' X' ofthe pipes C C' J' X'. These I pipes at the ends are placed on nozzles m' n',

on which they vibrate as the chambers move up and down, the joints being made perfectly' steam and water tight. The nozzles a enter .passage-ways B B' underneath the steamchest, as shown in Fig. 4, and the nozzles m', enter drums M M', asfseenin Fig. 5. In these drums are arranged valves I I' andp p', that are alike in each drinn, andin the lower part of the drums there is apassage-way, u, that a pipe, H', enters. This pipe extends along underneath the chestd and turns up at the end `in Fig. 3, and enters the lower partot' the condenser.

N is a water-pipe that communicates with the drums M M', through which water is conveyed into the boiler.

The practical operation of this feeder as constructed, is as follows: The steam from the boiler enters the pipe A, passes down through the pipe b into the middle division, q, of the chest, from `which it passes out at each side through the ports o of the valve-seats and ports d of the valves, round through passages j", out at ports c of the valves and ports P ot the valve-seats into division q of the chest, the

valves being moved along so that the ports o and el and e and l? are directly opposite cach other. The steam from the division q' of the chest passes down through the passage-way B', along the pipe C, up the pipe D, into the chamber E. At the same time water enters the condenser through the pipe F from the well, which passesdown and along the pipe H' into the passage u, up through the valve p' in drum M', back through the pipe X', ,down and along the pipe X, up into the chamber L, and as the water thus runs into this chamber the weight of the water will cause it to be depressed, which elevates the chamber E, and as the chamber E rises it causes the steam to discharge through pipes D C and passage B', up into the division q' of the chest d., out at ports I in valve-seats, and ports d into valves E, round through ports e S into division z, from whence it passes up through curved pipe g' and pipe A into the condenser. At the Y sametime steam is passingdowu into the chest cl from A, through ports o in valve-seats, and

ports c into valves R, around in passages j',y

through .ports a and m into division 1" of' the chest, from whence it passes down through lpassage B, along the pipe J', up through pipe K into the chamber L, producing the same pressure asin the boiler, causingthe water fromV this chamber to pass through the pipe X, along the pipe X' into the drum M', which enters the drum above the valve p', and it passes up A through the valve p, out at the pipe N, into the boiler. The chamber L fills with steam as the air and water are forced outinto the boilerL Y rlhe chambers E and L rising and falling ing-pipes J' and X, forcing out the air and water that may be therein through the pipes X X', and the upper valve p, through the pipe N, into the boiler. Then, as L rises, the steam therefrom passes into the condenser G, through the pipes X J', and valves R, in a similar manner, as described, for the passage of steam from the chamber D, into the condenser, and as the steam passes out a vacuum is formed, which is then filled from the Well through the check-valve in pipe F, rst lling G, and then passingdown and alongthepipeH,throughthe lower valve, p and pipes X X', into chamber L. While the water is thus passing into B and L steam is passing into the chamber E through pipe A, valves R, passage B', and pipes O D, as before described, that is then raised by the weight of water in L, which, by its connection with the valves R, moves them so as to discharge steam from E into G, through pipes D C and passage B', in the manner before described, which steam is condensed by water in the condenser, and also in E, by water passing from G into E from the well through the passages before mentioned. There is no communication between the pipe A and pipes g, g', and A' leading into G.

When steamis passing into L, water is passing into E, in a similar manner as described for the passage of water into L, the valves I I' and p p' in the drums andthe pipes on each side being constructed and operating alike.

l What I claim as my improvement, and desire to secure by Letters Patent, is

l. The valves R and chest d, when arranged and connected together on each side of the chest, and operated conjointly, as set forth.

2. The combination of oscillating chambers E L with the condenser G and valve-drums M M', when arranged and operating substan tially as set forth.

3. The combination of the beam H, pendulum J, and connecting-rod V', in combination with the valves R, and chambers E L, as and for the purpose specified.

o. H. rnnnrrss.

Witnesses:

W. H. BURRIDGE, A. W. McCLnLLANn. 

